On 8th November 2024, Ghana celebrated a significant milestone in sustainable architecture with the inauguration of a Nearly Zero-Energy Building (nZEB). The project, a collaboration between GIZ Ghana and the Energy Commission of Ghana, represents a transformative step towards environmentally responsible construction.

This innovative model building showcases how government office buildings can be designed with energy efficiency at their core, setting a new standard for sustainability in Africa. Berock Construction Limited, the primary contractor, is proud to have played a key role in delivering this forward-thinking project, underscoring its commitment to building a greener, more sustainable future.

A Vision in Sustainable Design

Designed by S. Tetteh + Associates, the nZEB exemplifies modern sustainable architecture. The compact structure incorporates both passive and active strategies to minimise energy consumption. Key features include:

• Extensive Sunshading: Crafted from native denya hardwood, the sunshading system reduces heat gain while enhancing the aesthetic appeal.
• Double-Glazed Low-Emissivity Windows: These provide thermal insulation and comfort while allowing natural light to flow through the building.
• Locally Sourced Materials: By prioritising Ghanaian resources, the project reduces its carbon footprint and supports local industries.

These elements not only minimise the building’s environmental impact but also reflect Berock’s commitment to championing Ghanaian craftsmanship and sustainable practices.

Energy Efficiency at Its Core

The Nearly Zero-Energy Building generates 88% of its annual electrical load (56.1 MWh out of 63 MWh) through an on-site 50 kW peak solar photovoltaic (PV) system. Once net metering is implemented, the building is projected to become a net power exporter, demonstrating an exceptional commitment to energy sustainability.

Other notable energy-saving features include:

• Eco-Friendly Cooling: The building’s central cooling system operates with R290 refrigerant, a zero-greenhouse gas alternative.
• Energy Management System: This advanced system actively monitors and optimises energy usage, ensuring peak efficiency at all times.

Over its 50-year lifecycle, the building is expected to reduce environmental impacts by 50% compared to conventional structures, showcasing Berock’s expertise in sustainable construction.

Celebrating Ghanaian Culture and Craftsmanship

The building’s interior design pays homage to Ghanaian culture and heritage. Highlights include:

• Woven Pendant Lighting: Inspired by traditional basketry, these unique fixtures adorn the entrance foyer.
• White Terrazzo Flooring: Sleek and modern, the floors are both durable and elegant.
• Rammed Earth Walls: These natural accents add warmth and texture to reception and office spaces.

The design merges functionality with cultural expression, creating a space that is as inspiring as it is practical.

Functional and Flexible Spaces

The building features:

• Two conference rooms (65-seater and 70-seater)
• Office spaces for staff
• Kitchens and washrooms
• A roof terrace and a courtyard

As a venue for Energy Commission training workshops, the building not only serves as a functional workspace but also as a blueprint for future energy-efficient government facilities.

A Pioneering Project for a Sustainable Future

Berock Construction Limited is honoured to have been part of this landmark project. With a steadfast commitment to delivering sustainable, high-quality construction solutions, Berock is ready to lead the way in creating infrastructure that respects the environment and uplifts local communities.

For clients seeking innovative and responsible construction expertise, Berock offers unparalleled service, blending technical precision with a deep respect for cultural and environmental values.

Project Team

• Architects: S. Tetteh + Associates
• Quantity Surveyors: D-Kwarteng & Associates Consult Ltd
• MEP Engineers: ROHI Engineering Ltd
• Structural Engineers: Yawson & Lombardi LLC
• Contractors: Berock Construction Ltd